.fixWrap {
    position: fixed;
    left: 0;
    bottom: 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    height: 60px;
}
.fixWrap .fixBtn{
    width: 100px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    background-color: pink;
}